Design of a Ka-band 4th Sub-Harmonic Image Rejection Mixer

摘要

This paper presents the designing and realization of a Ka-band 4th sub-harmonic image rejection mixer using anti-parallel diode pair (APDP). Measured performance is as follow: RF:29.4 ~31GHz, IF is 100MHz, Conversion loss is11.2- 12.3dB and image rejection is larger than 20.2dB with the LO power 11dBm and RF power -30dBm. Both RF-IF isolation and LO-IF isolation are larger than 34.4dB.